use /dev/shm only if exists
use /dev/shm only if exists

yanheven/dpark,smarthomekit/dpark,windreamer/dpark,dogeyes/dpark,304471720/dpark,ee08b397/dpark,Mignet/dpark,junmoa/dpark,yhj630520/dpark,smarthomekit/dpark,smarthomekit/dpark,veritynoob/dpark,junmoa/dpark,dogeyes/dpark,veritynoob/dpark,windreamer/dpark,veritynoob/dpark,zzl0/dpark,oceanjack/dpark,douban/dpark,oceanjack/dpark,mageia/dpark,zzl0/dpark,douban/dpark,yhj630520/dpark,304471720/dpark,quxiaolong1504/dpark,fe11x/dpark,dogeyes/dpark,windreamer/dpark,Mignet/dpark,quxiaolong1504/dpark,mageia/dpark,daishaowei/dpark,daishaowei/dpark,304471720/dpark,fe11x/dpark,yhj630520/dpark,douban/dpark,yanheven/dpark,douban/dpark,douban/dpark,windreamer/dpark